package Generic;

import java.util.Collection;

/**
 * Created by ZC_zc on 2016/11/7.
 */
class Gen<T> {

    T ob;
    Gen(T o){
        ob=o;
    }

    T getOb(){
        Collection
        return ob;
    }
}

class Gen2 extends Gen{
    Gen2(String o){
        super(o);
    }
}
